New instance of Sql Server

Hi,
We're using Team City Version 5.0.1 (build 10715).  We're in the process of upgrading our database server to SQL Server Developer Edition 2005.  Previously we used SQL Server Express.  In the team city database.properties file the the instance has been set to "connectionProperties.instance=sqlexpress"


We're planning on just restoring our previous databases.  Looking for some advice on how we'll reconnect ......... should we just change our "connectionProperties.instance=localhost"

Thanks in advance